The weather at the airfield can be fine all day (forecast & actual) however if there is weather in the HKG FIR you can now expect delays. I've blown over 45mins of fuel after entering HK airspace, didn't divert around any weather and could see VHHH from before TD all the way around including VMMC to 07L, after landing I asked the ground staff about the weather they said it hadn't rained all day
If the company hadn't loaded the flight plan with the extra gas, I wouldn't have loaded extra based on the forecast. So it's 45mins extra for me now when there are clouds in the sky in the HK FIR
